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Old 01-08-2012, 07:50   #31
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Re: How to define open ocean vs. coastal cruising?

My insurance defines coastal as 75 miles.
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Old 01-08-2012, 08:09   #32
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Re: How to define open ocean vs. coastal cruising?

The difference...

One you head for cover upon a approaching storm.

The other you head out to sea...
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Old 01-08-2012, 09:02   #33
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Re: How to define open ocean vs. coastal cruising?

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Originally Posted by capn_billl View Post
My insurance defines coastal as 75 miles.
And mine says within 225 NM of any land...

I still don't think there is a clear definition
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Old 03-08-2012, 02:48   #34
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Re: How to define open ocean vs. coastal cruising?

Depending on the design features and seaworthiness of the vessel it
establishes limitations on navigation conditions, criteria which are
distance from harbors and wind-wave characteristics.
Costal sailing is 20 miles from shelter with wind condition limitations.
In USA by the USCG maybe more miles from the nearest shelter, I don't know exactly.
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Old 03-08-2012, 03:08   #35
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Re: How to define open ocean vs. coastal cruising?

Bash and Snowpetrel, I think, nailed it.

Distance to safe refuge is the determining factor, taken in conjunction with far out a reliable forecast goes.

Proximity to land is a liability rather than an asset in some instances: take the West coasts of most of NZ, for instance.

I'd further try to clarify this point by venturing the opinion that a bar entrance rules a harbour out as a 'safe refuge' for a keelboat in many parts of the world, even though they often have lots of boats moored safely within.

If you can't be certain you will be able to safely 'work' the bar when you get there, then it doesn't actually offer a haven.
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Old 03-08-2012, 04:22   #36
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Re: How to define open ocean vs. coastal cruising?

All vessels are divided into the court of unlimited trial diving and swimming with a limited area.
Read us registry of shipping,solas, coastal pilot, American navigator.
For example, the tanker can withstand a storm with a certain definite wave height and wind, which is 20 meters boat will not sustain.
Distance to the coast from your ship divides open ocean and coastal.
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Old 03-08-2012, 05:38   #37
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Re: How to define open ocean vs. coastal cruising?

IIRC: coastal was indicated by "on soundings",ocean was indicated by "off soundings"
So what are soundings? Not sure anymore but believe that the lead line was usually 100 fathoms ,anything deeper was"off soundings".
Again ,this too seems imprecise , but here in the N. Atlantic when the water color changes from green to cobalt blue I have no doubts I'm in the ocean.
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Old 03-08-2012, 06:03   #38
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Re: How to define open ocean vs. coastal cruising?

My insurance rates coastal as up to200 miles from land.
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Old 03-08-2012, 06:05   #39
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Re: How to define open ocean vs. coastal cruising?

I'd be guessing 'soundings' correlates roughly with the 'continental shelf' which a previous poster suggested was a plausible demarcation between coastal and offshore (certainly, if we replace 'offshore' with 'deep sea', then it's hard to disagree.....)

However it's the anomalous exceptions which (im)prove the rule. At the risk of solipsism, down these here parts, we have a relatively small land mass and a HUGE submerged continent, the only one of its type AFAIK. It's made from abnormally thin crust, which also means it doesn't have the buoyancy to sit high up on the underlying molten material, like a 'proper' continent.

So, our continental shelf is about the size and shape of India. Sailing about on much of it bears little resemblance to coastal sailing, however ....

Similarly, the Drake Passage lies on a continental shelf. You'd have trouble persuading most insurance companies that a jaunt from Cape Horn down to the Antarctic Peninsula qualified as a coastal passage, I reckon.
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Old 03-08-2012, 06:42   #40
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Re: How to define open ocean vs. coastal cruising?

What a trip from Key West to Ft Jefferson be considered?
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Old 03-08-2012, 06:58   #41
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Re: How to define open ocean vs. coastal cruising?

ExRonin had it in post #4, and as the young lady implies it refers to the days of old (pre Radar and GPS) when you switched from one mode of Navigation to the other, Coastal and Offshore.....

As happens a lot with this sort of stuff the original definition gets blurred over time and use. When learning nav (commercially) first you learn and qualify in terrestrial (coastal) then progress to celestial (offshore).....

Just reading through some of the above posts shows how the original definition between Coastal and Offshore has been lost, i blame the GPS..
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Old 03-08-2012, 07:07   #42
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Island Hopper, as I said in my post it is a bit old school, but I think the definition is less arbitrary and more practical to the sailor/mariner than the political or legal definitions cited... Oh, and this old navigator is a she. :-)
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Old 03-08-2012, 07:22   #43
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Re: How to define open ocean vs. coastal cruising?

Quote:
Originally Posted by ExRonin View Post
Island Hopper, as I said in my post it is a bit old school, but I think the definition is less arbitrary and more practical to the sailor/mariner than the political or legal definitions cited... Oh, and this old navigator is a she. :-)
My sincere apologies, i have corrected my mistake and hope you will forgive me....
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Old 03-08-2012, 07:29   #44
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Re: How to define open ocean vs. coastal cruising?

SaltyMonkeys Pizza Navigation Distance Rule
============================

If you can order a pizza via VHF or phone and have it delivered, you are coastal sailing.
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Old 03-08-2012, 07:39   #45
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Re: How to define open ocean vs. coastal cruising?

It should be self-evident from the myriad of different and conflicting responses that there is no answer to this. Objectively, it is silly to draw a line on a chart making this distinction.
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